Rigid 29 Aluminium Boost fork.

https://www.aliexpress.com/item/32873574338.html

considering your username should probably go cromo tho

https://konabikes.co.uk/products/konaspares-forks-cmpfkp2275pta-project2fork-27-5-p227-5-15mm

The Kinesis forks on their page or £400. Ali Express £85. 
What’s the deal there? I wouldn’t have thought kinesis are known enough to warrant pirating.

Isn't the usual answer Carboncycles eXotic aluminium?

aren't the genuine? Kinesis ones carbon 

I think Sonder do one for the Frontier. If the they don’t list them get in touch. It’s the sort of thing they have in store in the bargain pile

Does anyone know how heavy the kona forks are?

Back in ye olden days they were really light.

As mentioned above, Sonder Frontier forks are alloy.

Give them a call and ask if they'll sell you a pair. 

I'm just waiting to hear back from Sonder as to their length. Would you be able to measure for me?

No problem, @zippykona.

Here you go:

For reference, that's a 29 x 2.35 Ground Control tyre.

Brilliant, that's spot on. I shall purchase.

Sonder forks ordered £99.